Quote Originally Posted by benspeed View Post
The progression for the 968 is to move into STU at some point 2-3 seasons out. The class is too cool - allows all kinds of fun ways to tweak the car. But regarding motor - throwing the 2.5 turbo in there might do me much better on weight and is a cheaper motor to build than converting a 3.0 into a turbo.

A STU 2.5 turbo would allow me to run the car at 2770 lbs with a 37mm restrictor. I could get some serious power to the wheels in that config :-)

With my 3.0 N/A motor I have to run at 3300 or 3055 in ITR trim...

This all assumes I'm allowed to put a 2.5 turbo in a 968 - didn't come from the factory that way...

Based on this, I think it's good to go:


G
. Engine

1. Alternate engines may be used, given that


if the manufacturer of the vehicle and engine are the same (e.g., an Acura
engine installed into a Honda car)

and was available in a car delivered in North America. The chosen engine must
retain its original cylinder head and intake manifold. If an engine from a front wheel drive vehicle is installed in a rear
wheel drive vehicle, alternate OEM intake manifolds may be considered.


Ben I think you're going to have to spend tons of money to make the 2.5 T competitive with a 37mm SIR. Not only to then engine but to the suspension also since the rules allow more. I don't think this is anything wrong with your car and where you are at right now in ITR.